Good game. I liked the swarm effect, well made.
I love how the menu and game over screen were made like in-game scenarios so the lighting/shadows affect them as well, that was awesome. Also about the menu, I liked how before the game started there is already a swarm following the mouse to suggest how gameplay would go.
The game is very challenging, and I like that. But sometimes it felt close to being unfair rather than just difficult.
When I played there was no soundtrack and sound effects, adding those would make shine even more.